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Ferroelectric ordering of moiré excitons and collective photon emission emerge in WSe₂/WS₂ heterobilayers near the Mott state driven by strong dipolar interactions and a transition to symmetry-broken ferroelectric phases.

The fabrication of two-dimensional covalent organic framework films with uniform thickness, ordered structure and excellent semiconducting performance directly on substrates for applications in electronic devices remains challenging. Here, the authors address the challenge and produce out-of-plane oriented two-dimensional covalent organic frameworks by a Marangoni flow-aided interface synthesis method.

CrPS₄, a 2D van der Waals A-type antiferromagnet, is shown to exhibit ideal characteristics of Stoner–Wohlfarth antiferromagnets, such as ferromagnet-like binary switching rather than layer-by-layer flipping as in other 2D A-type antiferromagnets.

Molecular bilayer crystals of an organic semiconductor can exhibit metallic charge transport down to 8 K with an electrical conductivity of up to 245 S cm⁻¹, as well as charge carrier mobility values of more than 100 cm² V⁻¹ s⁻¹ at 20 K.

Freestanding membranes of hexagonal oxides remain difficult to obtain. In this work, a water-soluble crystalline hexagonal BaAl₂O₄ is found to serve as a sacrificial layer for obtaining freestanding membranes with six-fold or three-fold symmetry.

A new self-assembled monolayer at the buried interface of inverted perovskite solar cells improves photostability and favours energy transfer, resulting in devices with a certified power conversion efficiency of 27.19% and 1,500-h stability under the ISOS-L-2 protocol.

A cavity-array microscope is realized using intra-cavity lenses to create a two-dimensional array of over 40 modes, each coupled to a single atom in free-space.

Applications of optical laser-based techniques are limited by the long wavelengths of the lasers. Now, observations of phonons and thermal transport at nanometre length scales are reported with an all-hard X-ray transient-grating spectroscopy technique.

Highly ionically conductive and flexible solid-state composite battery electrolytes are engineered by alternately stacking inorganic Li_xM_yPS₃ (M = Cd or Mn) nanosheets with lithium-containing organic polymers in a perpendicular orientation to the surface of the electrodes.

Coherent spin waves—quantized into magnons—can be emitted as Cherenkov radiation, but their experimental realization is hindered by the lack of fast-moving magnetic perturbations. Now, a picosecond strain pulse is shown to induce this effect.

The electronic behaviour of complex oxides such as LaNiO₃ depends on many intrinsic and extrinsic factors, making it challenging to identify microscopic mechanisms. Here the authors demonstrate the influence of oxygen vacancies on the thickness-dependent metal-insulator transition of LaNiO₃ films.

Controllable and scalable phase transition of transition metal chalcogenides is challenging. Using in situ microscopic analysis, a non-stoichiometric phase transition from PdTe₂ to PdTe is observed on the atomic scale, providing mechanistic insights into the scalable phase engineering of transition metal chalcogenide films and heterostructures.

Splitting water using sunlight is a promising route to green hydrogen, yet inefficient charge carrier utilization in photocatalysts limits their solar-to-hydrogen efficiency. Here the authors introduce excitonic quantum superlattices to prolong exciton lifetimes and optimize charge steering, achieving a solar-to-hydrogen efficiency of 3% under ambient conditions.

The authors present ARPES measurements on the triple-layer cuprate superconductor Bi₂Sr₂Ca₂Cu₃O_10+δ. They find that, although the doping level of the inner CuO₂ plane is extremely low in under-doped samples, the d-wave superconducting gap is enhanced at the antinode and persists well above T_c without a Fermi arc, indicating a “nodal metal”.

The fluorooxoborate crystal NH₄B₄O₆F shows promise as a nonlinear optical material for vacuum ultraviolet light sources through second-harmonic generation, demonstrating record output energy and efficiency resulting from optimized arrangements of fluorine-based units creating asymmetric sublattices.

By leveraging the superconducting phase transition of Nb, a near-field thermal diode that operates near liquid helium temperature is demonstrated.

Control of magnetization is at the core of many spintronic applications. Out-of-plane anti-damping magnon torque now enables low-power, deterministic switching of perpendicular magnetization at zero magnetic field.

When doubly-degenerate band crossings known as Kramers nodal lines intersect the Fermi level, they form exotic three-dimensional Fermi surfaces composed of massless Dirac fermions. Here, the authors present evidence that the 3R polytypes of TaS₂ and NbS₂ are Kramers nodal line metals with open octdong and spindle-torus Fermi surfaces, respectively.

A two-dimensional van der Waals material, NbOCl₂, that simultaneously exhibits near-unity linear dichroism (~99%) over 100 nm bandwidth in ultraviolet regime and large birefringence (0.26–0.46) within a wide visible–near-infrared transparency window is reported.

Authors unveil how strain precisely tailors octahedral tilts, charge transfer, and orbital–spin reconstruction in LSMO/LCO bilayers, enabling robust interfacial Mn–Co antiferromagnetism and tunable magnetism.

Aadvanced computer simulations of three-dimensional turbulence reveal that the ab initio generation of large-scale magnetic fields is driven by shear-flow-induced jets; an analytical model is derived which reproduces the essential features of the flow- and field-generation mechanisms.

The authors report long-lived pump-induced conductivity suppression in metallic Ti₃C₂ MXenes using ultrafast terahertz and reflectance spectroscopy. The effect is attributed to strong photothermal heating and slow heat dissipation.

A van der Waals heterostructure made from atomic layers of ferroelectric CuCrP₂S₆ and ferromagnetic Fe₃GeTe₂ can offer reversible, non-volatile ferroelectric control of two-dimensional magnetism.

Colourful patterns in two-dimensional lead halide perovskites are created by letting them self-etch into tiny squares that can template epitaxial growth.

Cryogenic transport measurements of CsV₃Sb₅ nanobeams show a zero-field Josephson diode effect and radio-frequency rectification with power-dependent quantized voltage output.

Color center magnetometry enables spin-wave imaging in complex magnetic textures. This work overcomes key limitations of current approaches by decoupling sensor spins from control fields and using diamond and hBN color centers for complementary frequency operation, achieving isofrequency imaging of field-controlled spin waves.

Donahue et al. show that ageing is associated with changes in ER morphology. ER-phagy drives age-associated ER remodelling through tissue-specific factors.

Sweat sensors are important in personalized healthcare using natural oxidase to target biomolecules but these reactions are susceptible to external interference. Here, the authors report tryptophan- and histidine-treated copper metal-organic frameworks which show highly selective activity for ascorbate oxidation and can serve as an efficient ascorbate oxidase-mimicking material in sensitive sweat sensors.

A martensitic alloy with a tensile strength exceeding 3 GPa and a fracture elongation of 5.13% is developed. These mechanical properties arise from interface complexes interacting with dense dislocation networks, which is a mechanism shown to be applicable to other compositions.

The rational design of autonomous light-powered molecular motors remains a formidable challenge in nanoscience. Now, a photochemically driven diazene-based rotary motor has been shown to rotate around a single bond, with a preferred direction that can be reversed by changing the wavelength of the irradiation light.

The study introduces radio interferometric multiplexed spectroscopy (RIMS), a method designed to efficiently monitor the radio emissions of massive samples of stars. Applying it to LOFAR data, the authors identify stellar bursts, offering clues to possible star–planet magnetic interactions.

Altermagnets combine spin-split electronic bands with zero net magnetization, making them ideal for integration into spin-based information processing devices. Here Guo, Chen, Zeng, and coauthors demonstrate a magnetic memory making use of the altermagnetic spin splitting torque in a three terminal MRAM device.

The ability to tune spin-orbit interaction is crucial for spintronic and quantum devices. Alarab and colleagues use soft X-ray ARPES to show that this interaction in MoSe₂ can be strengthened by a proximity induced spin-orbit field transfer from a Pb layer deposited onto the MoSe₂ surface.

Scanning nitrogen-vacancy microscopy unveils super-moiré spin textures emerging in twisted double-bilayer CrI₃ and provides real-space evidence of antiferromagnetic Néel-type skyrmions spanning multiple moiré cells.

Out-of-plane polarized spin current generated by the Weyl semimetal tantalum iridium telluride can be used to achieve the field-free switching of the perpendicular magnetic anisotropy ferromagnet cobalt iron boron at room temperature.

Liu et al. report the design of organic cation to selectively enhance in-plane distortion for localizing excitons and suppress out-of-plane and intra-octahedral distortions for minimizing the formation of self-trapped excitons, enabling 2D perovskites with fast X-ray scintillation response (0.62 ns) and high light yield (19,700 photons MeV⁻¹).

This study demonstrates a low-energy photon device based on the kagome metal RbV₃Sb₅. It demonstrates that Fermi surface reconstruction, driven by a phase transition, leads to the emergence of van Hove singularities near the Fermi level.

Active galactic nuclei are surrounded by a dusty and molecular disk that fuels supermassive black holes and connects them to their host galaxies. Here, the authors show with JWST interferometric observations that most of the dust in the Circinus galaxies lies in a compact disk, while only a tiny fraction traces hot outflowing material.

Optical spin orientation of itinerant ferromagnets in twisted MoTe₂ homobilayers is demonstrated, enabling control of topological Chern numbers with circularly polarized light.

This study introduces P3T-Net, a pseudo-3D deep learning model that enables accurate and efficient cross-domain transfer of large 3D material images, improving image quality and ensuring image consistency across diverse imaging conditions.

Here, the authors propose a method for determining the three-dimensional locations of sources that emit extremely brief radio pulses. As an illustration, they demonstrate that a plane flying at an altitude of 8 km through clouds emits short radio pulses exclusively from its two engines and a particular point on the tail.

The properties of electronic transport through edge states of three-dimensional quantum Hall-like states are not yet resolved. Now, increasing the surface area of the edges is shown to produce increased conductance, suggesting that chiral surface states are present.

A protocol for cryogenic 3D correlative focused ion beam milling using an integrated fluorescence light microscope and montage cryo-ET for nonadherent and adherent mammalian cells, as well as primary Drosophila melanogaster neurons.

SpatialZ generates virtual single-cell spatial transcriptomics slices between experimentally measured sections, enabling accurate and efficient building of 3D cell atlases of different tissues.

Magnetic heliknotons are hopfions embedded in helical spin backgrounds. Current-induced nucleation and Hall-effect-free motion of isolated magnetic heliknotons is demonstrated in the chiral magnet FeGe.

The authors predict 2D CuMnP₂Se₆ where a tiny electric field ( ~ 0.001 V/Å) flips in-plane polarization and switches magnetism from antiferromagnetic to ferromagnetic, enabling ultralow-power spintronic memories.

By using superconducting quantum interference device arrays as microwave impedance transformers, piezoelectric microwave–acoustic transduction operating close to the maximal efficiency–bandwidth product of lithium niobate can be achieved.

Generation of orbital currents in a non-magnetic material can be useful to build efficient orbitronic devices. Now, the interplay of chiral phonons and electrons is shown to produce orbital currents in α-quartz.